CN212255241U - Large-scale cavern water inrush simulation test device suitable for high pressure rich water karst district - Google Patents
Large-scale cavern water inrush simulation test device suitable for high pressure rich water karst district Download PDFInfo
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- CN212255241U CN212255241U CN202020620520.3U CN202020620520U CN212255241U CN 212255241 U CN212255241 U CN 212255241U CN 202020620520 U CN202020620520 U CN 202020620520U CN 212255241 U CN212255241 U CN 212255241U
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Abstract
The utility model provides a large-scale cavern water inrush simulation test device suitable for high-pressure water-rich karst areas, which comprises a lateral restraint system, a ground stress loading system, a water pressure loading system and a data acquisition system; a model is poured in a space surrounded by the lateral restraint system, the ground stress loading system and the ground, and a high-pressure water-rich karst cavity and a cavern are arranged in the model; the ground stress loading system comprises a vertical stress loading system and a horizontal stress loading system which are used for applying vertical stress and horizontal stress to the model respectively, and the hydraulic pressure loading system is used for providing constant pressure water pressure to the high-pressure water-rich karst cavity in the model. The utility model provides a test device simple structure, convenient operation, the economic nature is better, can realize the real evolution law in rock mass seepage field and the research of gushing water mechanism under different ground stress condition, the different water pressure circumstances, provides the foundation for the large-scale underground cavern gushing water calamity prevention and cure in high pressure rich water karst district.
Description
Technical Field
The utility model belongs to the technical field of underground works water inrush disaster research, especially, relate to a be applicable to large-scale cavern water inrush simulation test device in high pressure rich water karst district.
Background
In recent years, with the implementation of national strategies of 'western big development' and 'one-road-in-one' in China, tunnels and underground engineering are rapidly developed, and various underground cavern engineering such as highway tunnels, railway tunnels, diversion tunnels, underground powerhouses and the like are being built on a large scale. In high-pressure water-rich karst areas, water inrush and water inrush are one of the most main geological disasters faced in underground engineering construction, on one hand, geological exploration difficulty in the karst areas is high, construction risks are high, on the other hand, the problem of ecological environment protection caused by water inrush and water inrush is increasingly prominent, and the problem becomes a bottleneck problem gradually restricting economic construction and clean energy development in China.
At present, aiming at the problem of water inrush in a high-pressure water-rich karst region, the main research methods are still an empirical analysis method and an engineering comparison method, but the analysis methods are generally greatly influenced by subjective factors of researchers, and the analysis results have the defects of poor accuracy and poor applicability and are generally only suitable for qualitative analysis. In recent years, with the development of indoor model test methods and technologies, a great deal of achievements are obtained in the research of the water inrush catastrophe mechanism in the high-pressure water-rich karst areas, but the problems of complicated test steps, poor economy, uncontrollable water pressure, incapability of simulating different stress states, incapability of obtaining the real evolution law of rock mass seepage fields and the like generally exist in the existing model test devices under the limitation of technical conditions.
Therefore, aiming at the problem of water inrush catastrophe of large caverns in high-pressure water-rich karst areas, a model test platform which is convenient to operate and good in economical efficiency and can be used for researching the real evolution law of rock mass seepage fields and the water inrush mechanism under different stress states and different water pressures is needed to be developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be applicable to the large-scale cavern water inrush simulation test device in high pressure rich water karst district to the not enough of existence among the prior art.
Therefore, the utility model adopts the following technical scheme:
the utility model provides a be applicable to large-scale cavern water inrush simulation test device in rich water karst district of high pressure which characterized in that: the large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area comprises a lateral restraint system, a ground stress loading system, a water pressure loading system and a data acquisition system;
a model is poured in a space surrounded by the lateral restraint system, the ground stress loading system and the ground, and a high-pressure water-rich karst cavity and a cavern are arranged in the model;
the ground stress loading system comprises a vertical stress loading system and a horizontal stress loading system which are used for applying vertical stress and horizontal stress to the model respectively, the water pressure loading system is used for providing constant pressure water pressure in the high-pressure water-rich karst cavity in the model, the data acquisition system comprises an osmometer and a data acquisition device, the osmometer is arranged between the high-pressure water-rich karst cavity and the cavern, and the osmometer is connected with the data acquisition device.
When adopting above-mentioned technical scheme, the utility model discloses can also adopt or make up and adopt following technical scheme:
as the utility model discloses a preferred technical scheme: the lateral restraint system consists of a solid rigid plate and an organic glass plate, the left side and the right side of the lateral restraint system are provided with U-shaped steel plates, the rear side of the lateral restraint system is provided with a planar steel plate, the front side of the lateral restraint system is provided with the organic glass plate, and the organic glass plate is provided with a cavity so as to facilitate excavation construction of a cavern; the left and right sides U shaped steel board passes through the earth anchor and the nut is fixed on ground, and the edge of a wing of U shaped steel board is equipped with the bolt hole, and plane steel board and organic glass board corresponding position are equipped with the bolt hole equally, fix each part through bolt and nut and be a whole.
As the utility model discloses a preferred technical scheme: two stiffening rib plates are arranged on the outer side of the organic glass plate to improve the constraint rigidity of the organic glass plate.
As the utility model discloses a preferred technical scheme: the vertical stress loading system consists of a counter-force truss, a hydraulic jack, an upper base plate and a servo loading control system, and the servo loading control system is connected with the hydraulic jack and used for adjusting the applied vertical stress and ensuring the constant vertical stress in the experimental process; the counter-force truss is installed at the top of the testing device and fixed with U-shaped steel plates on two sides through bolts and nuts, an upper base plate is arranged on the model, a plurality of hydraulic jacks are arranged on the upper base plate and in a space between the counter-force truss, the upper base plate plays a role in dispersing pressure, a round hole is formed in the upper base plate, the diameter of the round hole is larger than that of the water guide steel pipe, and the water guide steel pipe can pass through the round hole.
As the utility model discloses a preferred technical scheme: the horizontal stress loading system consists of a hydraulic jack, two side base plates and a servo loading control system, and the servo loading control system is connected with the hydraulic jack and is used for adjusting the applied horizontal stress and ensuring the constant horizontal stress in the experimental process; one end of the hydraulic jack is welded with the U-shaped steel plates on the two sides, the other end of the hydraulic jack is welded with the backing plates on the two sides, the hydraulic jack is in contact with the model through the backing plates on the two sides, and the backing plates on the two sides play a role in dispersing pressure.
As the utility model discloses a preferred technical scheme: the water pressure loading system comprises high-pressure nitrogen tank and constant-pressure water tank, the water source has been stored in the constant-pressure water tank, be equipped with air inlet and delivery port on the constant-pressure water tank, the air inlet and the high-pressure nitrogen tank of constant-pressure water tank are connected in order to provide constant pressure for the constant-pressure water tank, the delivery port of constant-pressure water tank passes through the water guide steel pipe and is connected with the high-pressure rich water karst cavity in the model, install servo pressure control valve on the high-pressure nitrogen tank with the regulated pressure size to guarantee that the water pressure is invariable in the experimentation.
As the utility model discloses a preferred technical scheme: the osmometer adopts a miniature osmometer.
The utility model provides a be applicable to large-scale cavern water inrush simulation test device in high pressure rich water karst district, the test device simple structure, convenient operation, the economic nature is better, can realize the research of the real evolution law in rock mass seepage field and water inrush mechanism under different ground stress condition, the different water pressure circumstances, provide the foundation for large-scale underground cavern water inrush disaster prevention and cure in high pressure rich water karst district.
Drawings
Fig. 1 is the overall structure diagram of the large-scale cavern water inrush simulation test device suitable for high-pressure rich water karst area that is provided by the utility model.
Fig. 2 is the utility model provides a be applicable to the large-scale cavern water inrush simulation test device in high pressure rich water karst district plan view.
Fig. 3 is a side view of the large-scale cavern water inrush simulation test device suitable for high-pressure rich water karst area that is provided by the utility model.
FIG. 4 is a block diagram of a lateral restraint system and a ground stress loading system.
FIG. 5 is a block diagram of a U-shaped steel plate in a lateral restraint system.
FIG. 6 is a block diagram of a planar steel plate within a lateral restraint system.
Fig. 7 is a block diagram of a plexiglas plate within a lateral restraint system.
FIG. 8 is a block diagram of a stiffener within a lateral restraint system.
FIG. 9 is a block diagram of an upper pad in the ground stress loading system.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A simulation test device for water inrush of large caverns in high-pressure water-rich karst areas comprises a lateral restraint system, a ground stress loading system, a water pressure loading system, an osmometer and a data acquisition system. The side direction restraint system is opened there is the cavity by left and right sides U type steel sheet 1, rear portion plane steel sheet 2, anterior organic glass board 3 on the organic glass board, conveniently carries out 24 excavation constructions in grotto, and the organic glass board outside is equipped with two stiffening rib boards 4 to improve organic glass board restraint rigidity.
The left and right U-shaped steel plates 1 are fixed on the ground through ground anchors 7 and nuts 6, the flanges of the U-shaped steel plates are provided with bolt holes 21, the corresponding positions of the planar steel plates and the organic glass plates are also provided with the bolt holes 21, and all the parts are fixed into a whole through bolts 5 and nuts 6.
The ground stress loading system comprises a vertical stress loading system and a horizontal stress loading system, the vertical stress loading system is composed of a counter-force truss 8, hydraulic jacks 9, an upper base plate 10 and a servo loading control system 12, the counter-force truss is installed at the top of the test device and fixed with U-shaped steel plates on two sides through bolts and nuts, a plurality of hydraulic jacks 9 are placed between the model 25 and the counter-force truss 8, the hydraulic jacks are in contact with the model through the upper base plate, the upper base plate plays a role in dispersing pressure, a round hole 22 is formed in the upper base plate, the diameter of the round hole is larger than the diameter of a water guide steel pipe 18, and the water guide steel pipe can.
The horizontal stress loading system is composed of a hydraulic jack 9, two side base plates 11 and a servo loading control system 12, one end of the hydraulic jack is welded with the U-shaped steel plates on the two sides, the other end of the hydraulic jack is welded with the two side base plates, the hydraulic jack is in contact with the model through the two side base plates, and the two side base plates play a role in dispersing pressure.
The servo loading control system is connected with the hydraulic jack, can respectively adjust the magnitude of the applied vertical stress and the magnitude of the applied horizontal stress, and ensures that the magnitude of the ground stress is constant in the experimental process.
The water pressure loading system is composed of a high-pressure nitrogen tank 13 and a constant-pressure water tank 15, a water source is stored in the constant-pressure water tank, an air inlet 16 and a water outlet 17 are arranged on the constant-pressure water tank, the air inlet is connected with the high-pressure nitrogen tank to provide constant pressure for the constant-pressure water tank, the water outlet is connected with a high-pressure water-rich karst cavity 23 in the model through a water guide steel pipe 18, and a servo pressure control valve 14 is arranged on the high-pressure nitrogen tank to adjust the water pressure and ensure the water pressure to be constant in the.
The osmometer 19 adopts a miniature osmometer, and the water pressure change condition in the rock mass is collected in real time through the data acquisition system 20 in the test process.
The above-mentioned embodiments are only for explaining the preferred embodiments of the present invention, and not for limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made by the present invention fall within the protection scope of the present invention within the spirit and the protection scope of the claims.
Claims (7)
1. The utility model provides a be applicable to large-scale cavern water inrush simulation test device in rich water karst district of high pressure which characterized in that: the large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area comprises a lateral restraint system, a ground stress loading system, a water pressure loading system and a data acquisition system;
a model is poured in a space surrounded by the lateral restraint system, the ground stress loading system and the ground, and a high-pressure water-rich karst cavity and a cavern are arranged in the model;
the ground stress loading system comprises a vertical stress loading system and a horizontal stress loading system which are used for applying vertical stress and horizontal stress to the model respectively, the water pressure loading system is used for providing constant pressure water pressure in the high-pressure water-rich karst cavity in the model, the data acquisition system comprises an osmometer and a data acquisition device, the osmometer is arranged between the high-pressure water-rich karst cavity and the cavern, and the osmometer is connected with the data acquisition device.
2. The large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area of claim 1, characterized in that: the lateral restraint system consists of a solid rigid plate and an organic glass plate, the left side and the right side of the lateral restraint system are provided with U-shaped steel plates, the rear side of the lateral restraint system is provided with a planar steel plate, the front side of the lateral restraint system is provided with the organic glass plate, and the organic glass plate is provided with a cavity so as to facilitate excavation construction of a cavern; the left and right sides U shaped steel board passes through the earth anchor and the nut is fixed on ground, and the edge of a wing of U shaped steel board is equipped with the bolt hole, and plane steel board and organic glass board corresponding position are equipped with the bolt hole equally, fix each part through bolt and nut and be a whole.
3. The large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area of claim 2, characterized in that: two stiffening rib plates are arranged on the outer side of the organic glass plate to improve the constraint rigidity of the organic glass plate.
4. The large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area of claim 1, characterized in that: the vertical stress loading system consists of a counter-force truss, a hydraulic jack, an upper base plate and a servo loading control system, and the servo loading control system is connected with the hydraulic jack and used for adjusting the applied vertical stress and ensuring the constant vertical stress in the experimental process; the counter-force truss is installed at the top of the testing device and fixed with U-shaped steel plates on two sides through bolts and nuts, an upper base plate is arranged on the model, a plurality of hydraulic jacks are arranged on the upper base plate and in a space between the counter-force truss, the upper base plate plays a role in dispersing pressure, a round hole is formed in the upper base plate, the diameter of the round hole is larger than that of the water guide steel pipe, and the water guide steel pipe can pass through the round hole.
5. The large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area of claim 1, characterized in that: the horizontal stress loading system consists of a hydraulic jack, two side base plates and a servo loading control system, and the servo loading control system is connected with the hydraulic jack and is used for adjusting the applied horizontal stress and ensuring the constant horizontal stress in the experimental process; one end of the hydraulic jack is welded with the U-shaped steel plates on the two sides, the other end of the hydraulic jack is welded with the backing plates on the two sides, the hydraulic jack is in contact with the model through the backing plates on the two sides, and the backing plates on the two sides play a role in dispersing pressure.
6. The large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area of claim 1, characterized in that: the water pressure loading system comprises high-pressure nitrogen tank and constant-pressure water tank, the water source has been stored in the constant-pressure water tank, be equipped with air inlet and delivery port on the constant-pressure water tank, the air inlet and the high-pressure nitrogen tank of constant-pressure water tank are connected in order to provide constant pressure for the constant-pressure water tank, the delivery port of constant-pressure water tank passes through the water guide steel pipe and is connected with the high-pressure rich water karst cavity in the model, install servo pressure control valve on the high-pressure nitrogen tank with the regulated pressure size to guarantee that the water pressure is invariable in the experimentation.
7. The large-scale cavern water inrush simulation test device suitable for the high-pressure water-rich karst area of claim 1, characterized in that: the osmometer adopts a miniature osmometer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020620520.3U CN212255241U (en) | 2020-04-22 | 2020-04-22 | Large-scale cavern water inrush simulation test device suitable for high pressure rich water karst district |
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| CN202020620520.3U CN212255241U (en) | 2020-04-22 | 2020-04-22 | Large-scale cavern water inrush simulation test device suitable for high pressure rich water karst district |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533155A (en) * | 2020-04-22 | 2021-10-22 | 中国电建集团华东勘测设计研究院有限公司 | Large-scale cavern water inrush simulation test device and method suitable for high-pressure water-rich karst area |
| CN114111480A (en) * | 2021-11-04 | 2022-03-01 | 中交路桥华南工程有限公司 | Water-rich karst area blasting simulation system and manufacturing method |
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- 2020-04-22 CN CN202020620520.3U patent/CN212255241U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113533155A (en) * | 2020-04-22 | 2021-10-22 | 中国电建集团华东勘测设计研究院有限公司 | Large-scale cavern water inrush simulation test device and method suitable for high-pressure water-rich karst area |
| CN114111480A (en) * | 2021-11-04 | 2022-03-01 | 中交路桥华南工程有限公司 | Water-rich karst area blasting simulation system and manufacturing method |
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